{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{2}{c}}
\toprule
 &\multicolumn{2}{c}{Dep. var.: $X_{ni}/X_n$} \\\cmidrule(lr){2-3} &\multicolumn{1}{c}{Using $z_{ni}^{(1)}$}&\multicolumn{1}{c}{Using $z_{ni}^{(2)}$}\\\cmidrule(lr){2-2}\cmidrule(lr){3-3} &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)} \\ \midrule
$\mathbf{1}\left(\delta^c \in \text{2. Quintile }\right)\times z_{i}^{(1)}$&     -0.0065         &     -0.0036         \\
                    &    (0.0100)         &    (0.0073)         \\
\addlinespace
$\mathbf{1}\left(\delta^c \in \text{2. Quintile }\right)\times z_{n}^{(1)}$&      0.0014         &      0.0019         \\
                    &    (0.0021)         &    (0.0021)         \\
\addlinespace
$\mathbf{1}\left(\delta^c \in \text{3. Quintile }\right)\times z_{i}^{(1)}$&      0.0032         &      0.0032         \\
                    &    (0.0091)         &    (0.0068)         \\
\addlinespace
$\mathbf{1}\left(\delta^c \in \text{3. Quintile }\right)\times z_{n}^{(1)}$&      0.0010         &      0.0022         \\
                    &    (0.0025)         &    (0.0024)         \\
\addlinespace
$\mathbf{1}\left(\delta^c \in \text{4. Quintile }\right)\times z_{i}^{(1)}$&     -0.0053         &     -0.0030         \\
                    &     (0.011)         &    (0.0080)         \\
\addlinespace
$\mathbf{1}\left(\delta^c \in \text{4. Quintile }\right)\times z_{n}^{(1)}$&    -0.00026         &     0.00090         \\
                    &    (0.0025)         &    (0.0025)         \\
\addlinespace
$\mathbf{1}\left(\delta^c \in \text{5. Quintile }\right)\times z_{i}^{(1)}$&     0.00048         &      0.0025         \\
                    &     (0.010)         &    (0.0076)         \\
\addlinespace
$\mathbf{1}\left(\delta^c \in \text{5. Quintile }\right)\times z_{n}^{(1)}$&     -0.0025         &    -0.00054         \\
                    &    (0.0024)         &    (0.0024)         \\
\midrule
Upstream $\times$ Downstream FEs&         Yes         &         Yes         \\
Country FEs         &         Yes         &         Yes         \\
\midrule$R^2$       &       0.448         &       0.448         \\
Observations        &      133525         &      133525         \\
\bottomrule
\end{tabular}
}
